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Rhineland-Palatinate

Highly profitable full-service provider of sustainable energy and utility technologies

Our client, a highly qualified and crisis-proof master craftsman’s business, stands out as an integrated systems provider for utility infrastructure in the fields of heating, ventilation, and air conditioning, as well as photovoltaics, renewable energy, heat pumps, measurement and control technology, and electrical engineering—including charging infrastructure. For over 30 years, “saubere” GmbH has stood for technical expertise and innovation, as well as high quality in the planning, execution, and monitoring of building services systems—for municipalities, regional energy providers, hospitals, commercial clients, and private customers. Its cross-disciplinary expertise enables turnkey solutions from a single source. Significant future potential stems from, among other things, - expert status—particularly for complex projects, - growing demand in the smart home and renewable energy sectors - a smart staffing structure. Order processing is handled by three self-sufficient teams that operate completely independently and could be managed by the existing second-level management (ppa.). This would also make our client an ideal complement to HVAC companies with growth prospects or corporate groups. The sale is taking place as part of a planned succession due to the owner’s retirement. Upon request, the owner is available to facilitate a structured, professional transition phase. Key Highlights: Very strong revenue and earnings performance: - Proven and forward-looking range of services with stable demand and a clear value chain - Low dependence on fluctuations in the private construction sector - Particularly successful in public tenders - Recurring revenue from service and maintenance work as well as follow-up orders ensures predictable capacity utilization Stable foundation: - Excellent workforce, a qualified, well-coordinated team with extensive expertise; already 4 apprentices for 2026 ! - Per-employee revenue is double that of other companies of comparable size - Large existing customer base—including repeat clients - Very high brand recognition + long-standing market presence with high market penetration as a long-established and reliable trade business with high quality and workmanship standards = 1 of 3 providers for municipal PV contracts - Very strong equity base High growth potential: - Comprehensive and broad service portfolio = ranging from individual HVAC and measurement/control systems to complete building services engineering—thereby ensuring stability over the long term despite economic fluctuations - A company perfectly positioned for the energy transition and the future ESG market - With its own measurement and control department in the high-margin segment of smart building automation (Smart Building ) Scalability and growth potential: - 1 company – 2 brands - A broad and robust scope of services, including high potential – thereby setting the company apart from many competitors

Revenue
3,623,000 €
Earnings
768,900 €
Employees
13
View listing
North Rhine-Westphalia

Freight Forwarding Company, Including Land and Buildings - GmbH

Internationally active freight forwarding company (GmbH), well-known for over 90 years, including a 2,592-square-meter business property, office and warehouse space, and an adjacent three-family home—located in the North Rhine-Westphalia metropolitan area near an airport—for sale. The company is to be sold together with the business property and the adjacent three-family home. Business property: 2,592 square meters – directly adjacent to a federal highway – 2 highway exits, each approximately 1,500 meters away. Office building: 2 stories – 200 square meters of office space Warehouse: (including access ramp) 300 square meters – clear height 4 meters, sectional roll-up door Workshop for trucks/vehicles, etc.: 140 square meters at ground level, including a pit, material storage, staff room, and restroom facilities Gas heating: new, built in 2021 Yard area: fully paved, including a truck wash area with an oil separator and a storage tent. Three-family house: multi-family residence, directly adjacent to the business, built in 1961, 3 apartments, each 86 square meters—attic 60 square meters—converted and usable as a hobby room. Apartment on the 2nd floor currently vacant due to intention to sell. Net rental income for 3 apartments = ACTUAL €2,090/month Founded over 90 years ago, initially as a pure “transport company”; in 1953, licensed as a “freight forwarding agent.” • Prestigious clients from the very beginning • Warehousing and consolidation of logistics flows for a major electronics conglomerate, along with many other services

Revenue
800,000 €
Earnings
30,000 €
Employees
2
View listing
Germany

Project GENF - AI-Resistant Specialized Software for Transportation and Industry

For decades, the company has been developing mission-critical software for processing and distributing real-time data in complex infrastructure and system environments. Its solutions connect various data sources and supply downstream applications and operational systems. A second business unit applies this expertise to the integration of machine and plant data. The software is deeply integrated into customers’ environments. This results in high barriers to switching, long-standing customer relationships, and recurring revenue from support and maintenance contracts. A centrally maintained software core enables efficient expansion to additional customers. Despite having market-ready and scalable products, the existing market potential has so far been tapped only to a limited extent by the sales team. This software cannot be replaced by AI. This applies equally to both business divisions and is due to four structural reasons. · The critical knowledge is not publicly available. AI can only use what is documented. Data logic, processes, and interfaces for transportation customers are just as little disclosed as the data structure and security functions of industrial machinery. · A constant stream of new customer data. In the transportation sector, the software connects up to 15 legacy third-party systems; in industry, every new machine provides its own data. This raw data is not publicly available, and AI has no access to it. · Stability comes first. AI does not reliably produce the same result with the same data. Continuous operation and certified industrial interfaces require traceable, repeatable changes. · Data sovereignty provides additional protection. Customer data remains in the customers’ systems. For public transit operators, the NIS 2 requirements for critical infrastructure also apply. External AI services can therefore only be used to a limited extent. The company uses AI itself as a tool for documentation, testing, and the processing of customer data—not as a replacement. The 2026 revenue target of approximately 1.1 million EUR was already achieved in October, meaning the fiscal year will close above plan. Despite having market-ready and scalable products, the company has so far tapped into the market potential only to a limited extent through sales efforts. The shareholder will continue to support the company operationally for three to five years, as requested.

Revenue
1,000,000 €
Earnings
300,000 €
Employees
10
View listing

How to use the DUB marketplace to find the right company to buy

Once you have specified your search, matching results appear on the right. Click a listing's headline to go to the company's detail page, where key facts about the business are listed. If a listing interests you and you would like more information, you can contact the seller directly through the DUB messaging system. This is an ANONYMOUS and SECURE exchange between you and the seller — no information is shared with DUB. To use our anonymous messaging system, you need to be registered and logged in on the DUB portal, which is free. Please use the "Contact" button on the listing's page to get in touch.

If your search doesn't return matching companies, you can save your search for free and get notified by email whenever new sale offers appear. Alternatively, you can present yourself to company sellers by creating an investor profile and posting a buying mandate. If you need expert advice on buying a company, you can find a suitable advisor in our advisor directory who can support you through your transaction. Make the most of the many options and wide reach of the DUB marketplace to find the right company to buy. For regional searches, either use the filters or find companies in specific regions via our Succession in Germany page.

Buying a company vs. buying a firm

Buying a company means acquiring an independent organizational unit that regularly carries out an economic activity. A company can consist of one or several business operations. An individual can also found such an independent unit if they regularly carry out an economic activity — in that case it is called a sole proprietorship. As a rule, sole proprietors don't have to register in the commercial register; without that registration, they don't legally count as a "firm." A trade name, colloquially a "firm," is the name under which a company or sole proprietor appears publicly and conducts its business. Buying "a firm" therefore technically means acquiring the company's name or trading name. In everyday use, though, it's used interchangeably with buying a company — i.e. acquiring the entire business.